diff options
Diffstat (limited to 'arch/arm/cpu/arm926ejs/at91/at91sam9m10g45_devices.c')
-rw-r--r-- | arch/arm/cpu/arm926ejs/at91/at91sam9m10g45_devices.c | 114 |
1 files changed, 55 insertions, 59 deletions
diff --git a/arch/arm/cpu/arm926ejs/at91/at91sam9m10g45_devices.c b/arch/arm/cpu/arm926ejs/at91/at91sam9m10g45_devices.c index 4ad9b1f..5ff32e3 100644 --- a/arch/arm/cpu/arm926ejs/at91/at91sam9m10g45_devices.c +++ b/arch/arm/cpu/arm926ejs/at91/at91sam9m10g45_devices.c @@ -26,135 +26,131 @@ #include <asm/arch/at91_common.h> #include <asm/arch/at91_pmc.h> #include <asm/arch/gpio.h> -#include <asm/arch/io.h> +#include <asm/io.h> + +/* + * if CONFIG_AT91_GPIO_PULLUP ist set, keep pullups on on all + * peripheral pins. Good to have if hardware is soldered optionally + * or in case of SPI no slave is selected. Avoid lines to float + * needlessly. Use a short local PUP define. + * + * Due to errata "TXD floats when CTS is inactive" pullups are always + * on for TXD pins. + */ +#ifdef CONFIG_AT91_GPIO_PULLUP +# define PUP CONFIG_AT91_GPIO_PULLUP +#else +# define PUP 0 +#endif void at91_serial0_hw_init(void) { - at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE; + at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC; at91_set_a_periph(AT91_PIO_PORTB, 19, 1); /* TXD0 */ - at91_set_a_periph(AT91_PIO_PORTB, 18, 0); /* RXD0 */ - writel(1 << AT91SAM9G45_ID_US0, &pmc->pcer); + at91_set_a_periph(AT91_PIO_PORTB, 18, PUP); /* RXD0 */ + writel(1 << ATMEL_ID_USART0, &pmc->pcer); } void at91_serial1_hw_init(void) { - at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE; + at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC; at91_set_a_periph(AT91_PIO_PORTB, 4, 1); /* TXD1 */ - at91_set_a_periph(AT91_PIO_PORTB, 5, 0); /* RXD1 */ - writel(1 << AT91SAM9G45_ID_US1, &pmc->pcer); + at91_set_a_periph(AT91_PIO_PORTB, 5, PUP); /* RXD1 */ + writel(1 << ATMEL_ID_USART1, &pmc->pcer); } void at91_serial2_hw_init(void) { - at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE; + at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC; at91_set_a_periph(AT91_PIO_PORTD, 6, 1); /* TXD2 */ - at91_set_a_periph(AT91_PIO_PORTD, 7, 0); /* RXD2 */ - writel(1 << AT91SAM9G45_ID_US2, &pmc->pcer); + at91_set_a_periph(AT91_PIO_PORTD, 7, PUP); /* RXD2 */ + writel(1 << ATMEL_ID_USART2, &pmc->pcer); } -void at91_serial3_hw_init(void) +void at91_seriald_hw_init(void) { - at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE; + at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC; at91_set_a_periph(AT91_PIO_PORTB, 12, 0); /* DRXD */ at91_set_a_periph(AT91_PIO_PORTB, 13, 1); /* DTXD */ - writel(1 << AT91_ID_SYS, &pmc->pcer); -} - -void at91_serial_hw_init(void) -{ -#ifdef CONFIG_USART0 - at91_serial0_hw_init(); -#endif - -#ifdef CONFIG_USART1 - at91_serial1_hw_init(); -#endif - -#ifdef CONFIG_USART2 - at91_serial2_hw_init(); -#endif - -#ifdef CONFIG_USART3 /* DBGU */ - at91_serial3_hw_init(); -#endif + writel(1 << ATMEL_ID_SYS, &pmc->pcer); } -#ifdef CONFIG_ATMEL_SPI +#if defined(CONFIG_HAS_DATAFLASH) || defined(CONFIG_ATMEL_SPI) void at91_spi0_hw_init(unsigned long cs_mask) { - at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE; + at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC; - at91_set_a_periph(AT91_PIO_PORTB, 0, 0); /* SPI0_MISO */ - at91_set_a_periph(AT91_PIO_PORTB, 1, 0); /* SPI0_MOSI */ - at91_set_a_periph(AT91_PIO_PORTB, 2, 0); /* SPI0_SPCK */ + at91_set_a_periph(AT91_PIO_PORTB, 0, PUP); /* SPI0_MISO */ + at91_set_a_periph(AT91_PIO_PORTB, 1, PUP); /* SPI0_MOSI */ + at91_set_a_periph(AT91_PIO_PORTB, 2, PUP); /* SPI0_SPCK */ /* Enable clock */ - writel(1 << AT91SAM9G45_ID_SPI0, &pmc->pcer); + writel(1 << ATMEL_ID_SPI0, &pmc->pcer); if (cs_mask & (1 << 0)) { - at91_set_a_periph(AT91_PIO_PORTB, 3, 0); + at91_set_a_periph(AT91_PIO_PORTB, 3, 1); } if (cs_mask & (1 << 1)) { - at91_set_b_periph(AT91_PIO_PORTB, 18, 0); + at91_set_b_periph(AT91_PIO_PORTB, 18, 1); } if (cs_mask & (1 << 2)) { - at91_set_b_periph(AT91_PIO_PORTB, 19, 0); + at91_set_b_periph(AT91_PIO_PORTB, 19, 1); } if (cs_mask & (1 << 3)) { - at91_set_b_periph(AT91_PIO_PORTD, 27, 0); + at91_set_b_periph(AT91_PIO_PORTD, 27, 1); } if (cs_mask & (1 << 4)) { - at91_set_pio_output(AT91_PIO_PORTB, 3, 0); + at91_set_pio_output(AT91_PIO_PORTB, 3, 1); } if (cs_mask & (1 << 5)) { - at91_set_pio_output(AT91_PIO_PORTB, 18, 0); + at91_set_pio_output(AT91_PIO_PORTB, 18, 1); } if (cs_mask & (1 << 6)) { - at91_set_pio_output(AT91_PIO_PORTB, 19, 0); + at91_set_pio_output(AT91_PIO_PORTB, 19, 1); } if (cs_mask & (1 << 7)) { - at91_set_pio_output(AT91_PIO_PORTD, 27, 0); + at91_set_pio_output(AT91_PIO_PORTD, 27, 1); } } void at91_spi1_hw_init(unsigned long cs_mask) { - at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE; + at91_pmc_t *pmc = (at91_pmc_t *) ATMEL_BASE_PMC; - at91_set_a_periph(AT91_PIO_PORTB, 14, 0); /* SPI1_MISO */ - at91_set_a_periph(AT91_PIO_PORTB, 15, 0); /* SPI1_MOSI */ - at91_set_a_periph(AT91_PIO_PORTB, 16, 0); /* SPI1_SPCK */ + at91_set_a_periph(AT91_PIO_PORTB, 14, PUP); /* SPI1_MISO */ + at91_set_a_periph(AT91_PIO_PORTB, 15, PUP); /* SPI1_MOSI */ + at91_set_a_periph(AT91_PIO_PORTB, 16, PUP); /* SPI1_SPCK */ /* Enable clock */ - writel(1 << AT91SAM9G45_ID_SPI1, &pmc->pcer); + writel(1 << ATMEL_ID_SPI1, &pmc->pcer); if (cs_mask & (1 << 0)) { - at91_set_a_periph(AT91_PIO_PORTB, 17, 0); + at91_set_a_periph(AT91_PIO_PORTB, 17, 1); } if (cs_mask & (1 << 1)) { - at91_set_b_periph(AT91_PIO_PORTD, 28, 0); + at91_set_b_periph(AT91_PIO_PORTD, 28, 1); } if (cs_mask & (1 << 2)) { - at91_set_a_periph(AT91_PIO_PORTD, 18, 0); + at91_set_a_periph(AT91_PIO_PORTD, 18, 1); } if (cs_mask & (1 << 3)) { - at91_set_a_periph(AT91_PIO_PORTD, 19, 0); + at91_set_a_periph(AT91_PIO_PORTD, 19, 1); } if (cs_mask & (1 << 4)) { - at91_set_pio_output(AT91_PIO_PORTB, 17, 0); + at91_set_pio_output(AT91_PIO_PORTB, 17, 1); } if (cs_mask & (1 << 5)) { - at91_set_pio_output(AT91_PIO_PORTD, 28, 0); + at91_set_pio_output(AT91_PIO_PORTD, 28, 1); } if (cs_mask & (1 << 6)) { - at91_set_pio_output(AT91_PIO_PORTD, 18, 0); + at91_set_pio_output(AT91_PIO_PORTD, 18, 1); } if (cs_mask & (1 << 7)) { - at91_set_pio_output(AT91_PIO_PORTD, 19, 0); + at91_set_pio_output(AT91_PIO_PORTD, 19, 1); } } |